20p £10 = 1000p 1000/70 = 980p so 14 full cookies. Leaving 20p change £450 £12,000 full price Discount = 12,000 * 35/100 = £4,200 So reduced price = £12,000 – £4,200 = £7,800 £7,800 less savings of £7,350 = £450 10 Times Monday Spaghetti & Apple Pie Day 1 Tuesday Day 2 Wednesday Spaghetti Day 3 Thursday Apple Pie Day 4 Friday Spaghetti Day 5 Saturday nothing Day 6 Sunday Spaghetti & Apple Pie Every 6th day she eats both. So in the next 60 days, she eats both 10 times 84 120 pupils 2/5ths boys = 48 boys (120/5 * 2) 3/4s of boys write in pencil = 48 * 3/4 = 36 Girls = (120-48)-72 1/3 in pen so 24. 2/3 in pencil so 48 Total in Pencil = 36 + 48 = 84 48cm Area of rectangle is 128cm² So use algebra to solve (remember area of rectangle = LxW) 2x * x = 128 (where 2x = length and x = width. Use 2x given length is twice width) 3x=128 2x²=128 x²=64 x=8 So perimeter = (8*4 for the length + 8*2 for the width) = 48cm 2+4+7 Picking up 8 is a good move as it means he can win on the next hand with different numbers rather than just relying on one number Robin will win the game because on the next move. This is because he can win with more permutations of the remaining cards than Susan. Eg Robin could pick up a 1 or 3 and win the game as an example. Susans options are limited
